IT1110898B - Perfezionamento nei filtri per segnali analogici e modem che contengono tali filtri - Google Patents

Perfezionamento nei filtri per segnali analogici e modem che contengono tali filtri

Info

Publication number
IT1110898B
IT1110898B IT50108/78A IT5010878A IT1110898B IT 1110898 B IT1110898 B IT 1110898B IT 50108/78 A IT50108/78 A IT 50108/78A IT 5010878 A IT5010878 A IT 5010878A IT 1110898 B IT1110898 B IT 1110898B
Authority
IT
Italy
Prior art keywords
filters
modems
improvement
contain
analog signals
Prior art date
Application number
IT50108/78A
Other languages
English (en)
Italian (it)
Other versions
IT7850108A0 (it
Inventor
Charles Robert Hewes
Original Assignee
Texas Instruments Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Texas Instruments Inc filed Critical Texas Instruments Inc
Publication of IT7850108A0 publication Critical patent/IT7850108A0/it
Application granted granted Critical
Publication of IT1110898B publication Critical patent/IT1110898B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H15/00—Transversal filters
    • H03H15/02—Transversal filters using analogue shift registers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14—Demodulator circuits; Receiver circuits
    • H04L27/144—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Analogue/Digital Conversion (AREA)
  • Filters That Use Time-Delay Elements (AREA)
IT50108/78A 1977-06-30 1978-06-29 Perfezionamento nei filtri per segnali analogici e modem che contengono tali filtri IT1110898B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/811,657 US4336613A (en) 1977-06-30 1977-06-30 Charge coupled device filters and modems incorporating such filters

Publications (2)

Publication Number Publication Date
IT7850108A0 IT7850108A0 (it) 1978-06-29
IT1110898B true IT1110898B (it) 1986-01-06

Family

ID=25207177

Family Applications (1)

Application Number Title Priority Date Filing Date
IT50108/78A IT1110898B (it) 1977-06-30 1978-06-29 Perfezionamento nei filtri per segnali analogici e modem che contengono tali filtri

Country Status (9)

Country Link
US (1) US4336613A (ja)
JP (1) JPS5414108A (ja)
CA (1) CA1111509A (ja)
DE (1) DE2828846A1 (ja)
FR (1) FR2414835A1 (ja)
GB (1) GB2000662B (ja)
IT (1) IT1110898B (ja)
NL (1) NL7807165A (ja)
SE (1) SE7807322L (ja)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4142245A (en) * 1977-08-22 1979-02-27 Texas Instruments Incorporated Multi-frequency digital wave synthesizer for providing analog output signals
FR2476948A1 (fr) * 1980-02-26 1981-08-28 Thomson Csf Demodulateur pour modem a modulation de frequence et modem comportant un tel demodulateur
FR2476939A1 (fr) * 1980-02-26 1981-08-28 Thomson Csf Filtre transversal pour modulateur-demodulateur et modulateur-demodulateur comportant un tel filtre
FR2476946A1 (fr) * 1980-02-26 1981-08-28 Thomson Csf Modulateur-demodulateur a transfert de charges.
JPS57152855U (ja) * 1981-03-20 1982-09-25
JPS57173232A (en) * 1981-04-17 1982-10-25 Hitachi Ltd Automatic equalizer
US4481642A (en) * 1981-06-02 1984-11-06 Texas Instruments Incorporated Integrated circuit FSK modem
US4466106A (en) * 1981-08-28 1984-08-14 Novation, Inc. Frequency shift keyed modem chip set
US4425665A (en) * 1981-09-24 1984-01-10 Advanced Micro Devices, Inc. FSK Voiceband modem using digital filters
DE3311181A1 (de) * 1982-03-29 1983-09-29 Racal-Data Communication, Inc., 33166 Miami, Fla. Daten-modem
US4538282A (en) * 1982-08-16 1985-08-27 Texas Instruments Incorporated Integrated circuit PSK modem phase locked loop
US4559634A (en) * 1982-08-16 1985-12-17 Texas Instruments Incorporated PSK Modem having dual-integrator voltage controlled oscillator
US4571731A (en) * 1982-08-16 1986-02-18 Texas Instruments Incorporated PSK modem filter switch
US4519083A (en) * 1982-08-16 1985-05-21 Texas Instruments Incorporated Bilateral digital data transmission system
JP2592795B2 (ja) * 1985-05-24 1997-03-19 キヤノン株式会社 情報データ復調装置
US4788693A (en) * 1985-09-30 1988-11-29 American Telephone And Telegraph Company, At&T Bell Laboratories Data communication replicator
US4694471A (en) * 1986-05-05 1987-09-15 Blesser Barry A Digital data communicating
EP0327533B1 (en) * 1986-10-21 1993-07-07 Motorola, Inc. Radio communication receiver with apparatus for altering bit rate of the receiver
EP0298484B2 (de) * 1987-07-10 1995-07-12 Siemens Aktiengesellschaft Optischer FSK-Homodynempfänger
US5557641A (en) * 1994-03-04 1996-09-17 Stanford Telecommunications, Inc. Charge-coupled-device based transmitters and receivers
US5577066A (en) * 1994-05-13 1996-11-19 Stanford Telecommunications, Inc. Charge-coupled-device based data-in-voice modem
US6167246A (en) * 1997-05-09 2000-12-26 Micrel Incorporated Fully integrated all-CMOS AM receiver
GB2335809B (en) * 1998-03-24 2001-09-12 Ericsson Telefon Ab L M Demodulator circuits
JP5087222B2 (ja) * 2005-12-26 2012-12-05 株式会社リコー Ｉｃタグ用リーダ及び／又はライタ、並びにそのアンテナユニット
EP2016771B1 (en) * 2006-05-11 2012-12-19 Thomson Licensing Frequency translation module data clamp
US20080248765A1 (en) * 2007-04-04 2008-10-09 Micrel, Inc. Superheterodyne Receiver with Switchable Local Oscillator Frequency and Reconfigurable IF Filter Characteristics
US9941813B2 (en) 2013-03-14 2018-04-10 Solaredge Technologies Ltd. High frequency multi-level inverter
US9318974B2 (en) 2014-03-26 2016-04-19 Solaredge Technologies Ltd. Multi-level inverter with flying capacitor topology
RU2702499C1 (ru) * 2019-03-14 2019-10-08 федеральное государственное бюджетное образовательное учреждение высшего образования "Донской государственный технический университет" (ДГТУ) Универсальный активный rc-фильтр
RU2702496C1 (ru) * 2019-03-15 2019-10-08 федеральное государственное бюджетное образовательное учреждение высшего образования "Донской государственный технический университет" (ДГТУ) Универсальный активный rc-фильтр на основе мультидифференциальных операционных усилителей

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1443970A (en) * 1973-01-02 1976-07-28 Texas Instruments Inc Charge transfer device matched filter
US3877056A (en) * 1973-01-02 1975-04-08 Texas Instruments Inc Charge transfer device signal processing system
IT980928B (it) * 1973-04-30 1974-10-10 Cselt Centro Studi Lab Telecom Apparecchiature di utente e di in gresso ad una centrale pcm per la trasmissione di dati ad alta velo cita
US3879664A (en) * 1973-05-07 1975-04-22 Signatron High speed digital communication receiver
US3832637A (en) * 1973-06-22 1974-08-27 Teletype Corp Fsk modem
US3909527A (en) * 1973-09-18 1975-09-30 Mitsubishi Electric Corp Frequency shift keying system and method
US3942034A (en) * 1973-12-28 1976-03-02 Texas Instruments Incorporated Charge transfer device for frequency filtering respective time segments of an input signal
US3943448A (en) * 1974-09-11 1976-03-09 Hycom Incorporated Apparatus and method for synchronizing a digital modem using a random multilevel data signal
US3999152A (en) * 1974-10-21 1976-12-21 Hughes Aircraft Company CCD selective transversal filter
US3978407A (en) * 1975-07-23 1976-08-31 Codex Corporation Fast start-up adaptive equalizer communication system using two data transmission rates
US3987293A (en) * 1975-08-04 1976-10-19 Sperry Rand Corporation Programmable general purpose analog filter
US4071775A (en) * 1976-04-02 1978-01-31 Texas Instruments Incorporated Charge coupled differential amplifier for transversal filter
US4132950A (en) * 1977-04-27 1979-01-02 Texas Instruments Incorporated Clarifying radio receiver

Also Published As

Publication number Publication date
JPS5414108A (en) 1979-02-02
DE2828846A1 (de) 1979-01-18
NL7807165A (nl) 1979-01-03
GB2000662A (en) 1979-01-10
US4336613A (en) 1982-06-22
GB2000662B (en) 1982-03-10
SE7807322L (sv) 1978-12-31
IT7850108A0 (it) 1978-06-29
CA1111509A (en) 1981-10-27
FR2414835A1 (fr) 1979-08-10

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